code: def fori_loop(lower, upper, body_fun, init_val):
      val = init_val
      for i in range(lower, upper):
          val = body_fun(i, val)
      return val
  
imports: import numpy
  import tree
  from keras.backend.common import KerasVariable
  from keras.backend.common import standardize_dtype
  from keras.backend.common.dtypes import result_type
  from keras.backend.common.keras_tensor import KerasTensor
  from keras.backend.common.stateless_scope import StatelessScope
  from keras.utils.nest import pack_sequence_as
label_desc: Use image node_id 14 for calling a global function with example usage: fori_loop(lower, upper, body_fun, init_val) and returns: val